Find an Equation of the Parabola Described $y ^ { 2 } = - 12 x$

Multiple Choice

Find an equation of the parabola described.
-Focus at (-3, 0) ; directrix the line x = 3

A) $y ^ { 2 } = - 12 x$
B) $x ^ { 2 } = - 12 y$
C) $y ^ { 2 } = - 3 x$
D) $y ^ { 2 } = 12 x$